Check out the Substance Abuse forum if you haven't yet... Sorry to hear you are struggling I had issues with alcohol and other drugs but there are many who have gone through EXACTLY what you are going through now... and come up on the other side
edit: I see your in KL I'm just down here in singapore I found a link for ya...
Narcotics Anonymous Kuala Lumpur Meetings a list on NA meeting in your town... I hope you find some support...